fix layout SSR translations and remediation follow-ups

packages/dev-server/src/index.ts

@@ -6,7 +6,7 @@
  * the running process while the HMR socket morphs fresh HTML into the browser.
  */
 
-import { mkdirSync, readFileSync, writeFileSync } from "node:fs";
+import { mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs";
 import { resolve, dirname, isAbsolute, join } from "node:path";
 import type { Middleware, Mode, SecurityConfig, SeoConfig } from "@wrnexus/core";
 import { buildRouter, type Router } from "@wrnexus/router";
@@ -744,6 +744,7 @@ export async function startServer(opts: ServeOptions): Promise<RunningServer> {
       unsubscribeDevToolbar?.();
       server.stop();
       void pluginRunner.hook("shutdown");
+      rmSync(cacheDir, { recursive: true, force: true, maxRetries: 3, retryDelay: 100 });
     },
   };
 }